Part C Recall the steps of the scientific method:
1. Make observations.
2. Develop a hypothesis or make predictions.
3. Test the hypothesis.
4. Analyze the results.
5. Communicate the results.
Explain how the student in the article represented each step of the scientific method while developing his trench.
Describe what he used for dependent and independent variables

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.